I was looking for some information on SO about the C & C++ __func__ identifier, so I searched for: [c++] __func__. Only 3 of the first 50 results showed the full __func__ search term; all the others simply had "func" in the text, so I looked for a way to improve my search terms.

Some digging on here suggested that I should put the search term in quotes or escape the underscores with %5F, both of which give exactly the same results. (Though I did find a difference between searching for [c++] "__func" and [c++] __func.) I had similar lack of success for other C & C++ identifiers like __FILE__, __LINE__, __DATE__, etc.

What should my search terms be to show me just questions with __func__?